" vimrc file; this file will be kept in your 'home directory' or the (G)VIM main directory.  On Windows 7, it may be something like:
" C:\Program Files (x86)\Vim\_vimrc
" ... or:
" C:\Program Files\Vim\_vimrc

set nocompatible
source $VIMRUNTIME/vimrc_example.vim
source $VIMRUNTIME/mswin.vim
behave mswin

" Uncomment below to enable tabs-to-spaces, tabstop 4
"set expandtab
"set tabstop=4

" Uncomment below to prevent things like 'tilde backup files' (eg. myfile.txt~) from being created (probably don't want this, because of 'set backupdir')
"set nobackup
"set noundofile

" Uncomment below to cause things like 'tilde backup files' to be created in a different dir so as not to clutter up the current file's directory (probably a better idea than disabling them altogether)
" NOTE: the main Windows Temp dir may require admin access; in that case you'll probably want to set these dirs to your local Temp dir, something like:
"       C:\Users\[username]\AppData\Local\Temp
set backupdir=C:\Windows\Temp
set undodir=C:\Windows\Temp
set backupskip=C:\Windows\Temp
set directory=C:\Windows\Temp
set writebackup

" Uncomment below to disable 'swap files' (eg. .myfile.txt.swp) from being created
set noswapfile

" Uncomment below to set default encoding to UTF8
set enc=utf-8

" Uncomment below to set default GUI font to Lucida Console, size 12
set guifont=Lucida_Console:h12:cANSI

" Uncomment below to prevent line wrapping
"set nowrap

" Uncomment below to disable auto-indentation
"filetype indent plugin off
"filetype indent off

" This is a nice default max. text width to use and will wrap text correctly for submissions to sites like GameFAQs
set textwidth=78
if has("autocmd")
  autocmd FileType text setlocal textwidth=78
endif

" Setup multi-byte encoding
if has("multi_byte")
  if &termencoding == ""
    let &termencoding = &encoding
  endif
  set encoding=utf-8
  setglobal fileencoding=utf-8
  " Uncomment to have 'BOM' on by default for new files.
  " Note, this will not apply to the first, empty buffer created at Vim startup.
  "setglobal bomb
  set fileencodings=ucs-bom,utf-8,latin1
endif

set diffexpr=MyDiff()
function MyDiff()
  let opt = '-a --binary '
  if &diffopt =~ 'icase' | let opt = opt . '-i ' | endif
  if &diffopt =~ 'iwhite' | let opt = opt . '-b ' | endif
  let arg1 = v:fname_in
  if arg1 =~ ' ' | let arg1 = '"' . arg1 . '"' | endif
  let arg2 = v:fname_new
  if arg2 =~ ' ' | let arg2 = '"' . arg2 . '"' | endif
  let arg3 = v:fname_out
  if arg3 =~ ' ' | let arg3 = '"' . arg3 . '"' | endif
  let eq = ''
  if $VIMRUNTIME =~ ' '
    if &sh =~ '\<cmd'
      let cmd = '""' . $VIMRUNTIME . '\diff"'
      let eq = '"'
    else
      let cmd = substitute($VIMRUNTIME, ' ', '" ', '') . '\diff"'
    endif
  else
    let cmd = $VIMRUNTIME . '\diff'
  endif
  silent execute '!' . cmd . ' ' . opt . arg1 . ' ' . arg2 . ' > ' . arg3 . eq
endfunction